linux-kernel - [PATCH net v2] skbuff: fix compilation warnings in skb

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Message-Id: <1563291785-6545-1-git-send-email-cai@lca.pw>
Date:   Tue, 16 Jul 2019 11:43:05 -0400
From:   Qian Cai <cai@....pw>
To:     davem@...emloft.net
Cc:     willemb@...gle.com, joe@...ches.com,
        clang-built-linux@...glegroups.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Qian Cai <cai@....pw>
Subject: [PATCH net v2] skbuff: fix compilation warnings in skb_dump()

The commit 6413139dfc64 ("skbuff: increase verbosity when dumping skb
data") introduced a few compilation warnings.

net/core/skbuff.c:766:32: warning: format specifies type 'unsigned
short' but the argument has type 'unsigned int' [-Wformat]
                       level, sk->sk_family, sk->sk_type,
sk->sk_protocol);
                                             ^~~~~~~~~~~
net/core/skbuff.c:766:45: warning: format specifies type 'unsigned
short' but the argument has type 'unsigned int' [-Wformat]
                       level, sk->sk_family, sk->sk_type,
sk->sk_protocol);
^~~~~~~~~~~~~~~

Fix them by using the proper types.

Fixes: 6413139dfc64 ("skbuff: increase verbosity when dumping skb data")
Signed-off-by: Qian Cai <cai@....pw>
---

v2: Drop the checkpatch fix as it seems a bit more involved that it does not
    even like passing a variable to it, i.e., printk(level "msg"). Also,
    print_hex_dump() seems need a fix to be complete which can probably be done
    later.

 net/core/skbuff.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 6f1e31f674a3..0338820ee0ec 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -762,7 +762,7 @@ void skb_dump(const char *level, const struct sk_buff *skb, bool full_pkt)
 		printk("%sdev name=%s feat=0x%pNF\n",
 		       level, dev->name, &dev->features);
 	if (sk)
-		printk("%ssk family=%hu type=%hu proto=%hu\n",
+		printk("%ssk family=%hu type=%u proto=%u\n",
 		       level, sk->sk_family, sk->sk_type, sk->sk_protocol);
 
 	if (full_pkt && headroom)
-- 
1.8.3.1